On Mon, 19 May 2014, Abhilash Kesavan wrote:
> Hi Nicolas,
>
> On Thu, May 15, 2014 at 10:22 PM, Nicolas Pitre
> <nicolas.pi...@linaro.org> wrote:
> > Once you implement full cluster shutdown I can provide you with another
> > script stressing that part.
> I am done with the cluster power on/off code and it seems to work fine
> with bL_switcher. Can you please provide me with your stress script.
Here's the script. Credits go to Dave Martin for this one.
The script assumes that cluster 0 comprises cpus 0 to 3 and cluster 1
comprises cpus 4 to 7. You need to edit it otherwise.
----- >8
#!/bin/bash
echo 0 >/sys/kernel/bL_switcher/active
sleep 1
pids=
for x in \
"cluster=cluster0; cpus='cpu0 cpu1 cpu2 cpu3'" \
"cluster=cluster1; cpus='cpu4 cpu5 cpu6 cpu7'"
do
eval "$x"
eval "\
$cluster () {
pids=
`for cpu in $cpus; do cat <<EOF; done
(sleep .00\\$RANDOM; echo \\$1 >/sys/devices/system/cpu/$cpu/online)&
echo \\$1 >/sys/devices/system/cpu/$cpu/online&
pids=\\$pids\ \\$!
EOF`
wait \$pids
if [ \$1 = 0 ]; then
echo \"\$n: $cluster off\"
else
echo \"\$n: $cluster on\"
fi
}"
done
n=0
while :; do
: $((++n))
cluster1 1; cluster0 0
cluster0 1; cluster1 0
done
----- >8
Nicolas
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